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EXTENSION TABLE.

No. 469,214. Patented Fabi.. 16, 1892-.

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UNITED STATES PATENT OFFICE.

CARL OBERLNDER, OF STETTIN, ASSIGN OR TO RICHARD SAALFIELD, ,OF

BERLIN, GERMANY. Y

EXTENSION-TABLE.

SPECIFICATION forming part of Letters Patent No. 469,214, dated February16, 1892.

Application tiled May 28, 1891. Serial No. 394,388. (No model.) Patentedin Germany July 16,1890, No. 56,641.

To all whom it may concern.-

Be it known that I, CARL OBERLNDER, of Stettin, in the Empire ofGermany, have invented certain new and useful Improvements in SlidingTables; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

The invention has been patented in Germany, No. 56,641, dated July 16,1890.

This invention relates to an extensible table in which two or moreleaves may be inserted or withdrawn at will at each end in order tolengthen the table. In the former case the arrangement is such that bypulling a handle fixed below the end leaf this leaf can be Withdrawnfrom the table-frame and placed beneath the others, and by pushing thesaid handle this leaf can bereturned to its place on the frame. Thishandle is arranged so that it can be shifted to a small extent and isconnected yby means of a rod to a cam of peculiar shape, so that bypushing steadily the first extensible leaf the leaf `next to it israised by means of the raising device, hereinafter described, so thatthe leaf or leaves in before the raised leaf may be pushed under it.Vhen the leaves are required to be drawn up from beneath, leaf holdersor grippers having the shape of hooks come into operation and carry awaywith them the leaves to be reinstated.

In the accompanying drawings, Figure l represents a longitudinal sectionthrough the devices embodying my invention. Fig. 2 represents a bottomplan view of the same. Fig. 3 represents a longitudinal section throughthe table-leaves, showing the devices for raising the edges of theleaves when the table is to be closed. Fig. 4 represents a longitudinalsection through the leaves, showing the position of the closing devicewhen the first leaf is to be closed. Fig. 5 represents a similar view,only the closing device is acting on the second leaf. Fig. Grepresents alongitudinal section through the-table-leaves, showing the devicesemployed in extending said leaves.

'Fig.7 represents alongitu dinal section through table-leaves and guidesfor the same. Fig. 9 represents in detail, partly in section, a sideelevation of the devices employed 'in locking the table-legs; and Figs.lO and l1 represent in enlarged details, in side elevation, the devicesshown in Figs. 3, 4., and 5 for closing the leaves. Fig. 12 represents alongitudinal section of my device, showing, particularly, thearrangements for limiting the motion of the leaves. Fig. 13 representsin sectional detail view the devices for stopping the extension of theoutermost leaf and Fig. 14 represents a top plan View ofthesame,partlyin section.

A is the main tableleaf under which the spare leaves are folded. Thisleaf is rigidly attached to a cross-bar A. l

Attached to the framing of the table are the ridges b b, upon which theguides B B move. These guides B B are provided with sides al a, forminga trough-shaped receptacle, in which the guides b b', fixed to the outerextension-leaf, hereinafter mentioned, move. The double guides B slideon a wedge-shaped `ascending ledge b, which is placed at such an anglethat W-hen the leaves A2 A3 are drawn out they are raised up to thelevel of the fixed leaf A. In the bottom a of the outer case or guideBare placed side parts a and downjutting ribs a2, Fig. l2, whichstrengthen the cross-pieces as, carrying the ribs Z Z. These ribs engagewith the sides a in the long slit or groove a4, whereby the loosening ofthe guide B is prevented While being drawn out or pushed back. Ribs ofthe same description are also afxed to the side parts a, andv grooves a5are let into the guides b for the purpose of engaging therewith. Theribs a2 are so arranged that they strike against the table-frame F ifthe guide is extended s`o far that the leaf A2 is fully drawn out, asshown in Fig. l2. B can then go no fartherf The end of the guide bcarries an iron piece. b2, screwed to it, Figs. l2, 13, and 14,whicharrests the forward movement of the groove a5. Thus when b2 strikesagainst the stop Z, Fig. 14., b', and necessarily A3 with it, must stop,as they cannot be further extended, Fig. l2.

The leaf A2 when extended is supported by the guides B B. The leaf A3 issupported in a similar manner by the guides h b. To provide the extendedleaves with a more sub- IOO stantial support, I attach legs C C to theouter edge of the leaf A3. The leaf A2 is provided with a small angularpiece of rnetal @,having a short arm extending downward. This arinengages the inner edge of leaf A3 when it is being closed, and thelatter thereby forces leaf A2 Vto close also. The inneredge of leaf A3is also provided with an angular piece n, pivoted at nand pressed byspring fr. This angular piece engages the leaf A2 when the table isbeing extended, and thereby extends said leaf.

When leaf A2 is fully drawn, the greater part of the weight of theslightly-raised leaf A (because the end support c has raised the leaf Ain following the incline of b) is instantly thrown on the angle-piece n,Fig. 7, so that this must turn round the hinge n', as the weight .of theplate A more than counterbalances thev `pressure of the spring o".

The result is that now by drawing still f urther the handle f', Fig. 3,only the guide b',

with its fixed plate A3, can go farther until A3 is also drawn out toits full length, as shown in Fig. l2.

The devices E (shown in Figs. 3, 4t, and 5.) are for closing the table,and consist of a rod f, operated by handle f and provided with stop f2.The free end of this lever is pivoted at g2 to a cam g, which is pivotedat g to a plate on leaf A3. The inner edge of leaf A2 is provided with ahook-shaped spring h, set in a recess in said leaf. The outer under edgeof leaf A3 is provided with a cross-strip e. To this strip I hinge thelegs C C, connected by strip C at c. A recess is cut in the under sideof leaf A3, and a piece of spring metal is pivoted to one edge of saidrecess. A spring t" is set in said recess to bear against said piece ofspring metal, which is provided with an arm t', which engages the rigidcatch la on cross-piece C. A springcatch 7c is secured to another sideof crosspiece C and engages an elbow projection 2, set in cross-piece e.The spring-metal piece carrying arm 7l is provided with a knob c3 fordepressing it into the recess in said leaf A3. In the contrivance shownin Fig. 9 for the leg C it may be necessary when one wishes to put thelowered leg back into its place to inove the hook 2 upward, which can bedone in different ways. The support c, fixed to guide B, supports th'eleaf A. The leaf A2 is fixed to said guide B by means of an iron elbowd.

Both ends of the extension-table are operated in the saine manner, and Iwill therefore describe the operation of but one end only. Supposing theextension part of the tableto be closed, I first grasp the cross-piece eor handle f and by pulling steadily the leaves A2 and A3 are extended,the hook 'n on leaf A3 engaging the hook u on the rear side of leaf A2,and thereby preventing the leaf A3 being drawn alone. When leaf A2 hasreached its full extending limit, the hook n disengages its inner edgesand allows the leaf A3 to be drawn from under it and fully extended, asshown in Fig. 6. During this operation the guides B, b, and b have keptin position and supported the leaves A2 and A3. The knob e3 is nowpressed, thereby disengaging the arm vl from the catch 7c and allowingthe legs C to fall into a vertical position, in which position they areheld by means of armv t2 engaging the springcatch la', as plainly shownin Fig. 9. If in extending the table the handle f is pulled, the stop orshoulder f2 engages the cross-piece e, through which the rod f passes,and thereby prevents undue strain on the cani g and its pivotal points gand g2. If it is now desired to close the leaves, the handle f is pushedin, thereby bringing the cam g in contact with the outer edge of leaf A2and raising said edge, when a slight pressure on leaf A3 will slide itunder leaf A2. The handle f is again pressed in, and the cani g, comingin contact with the spring-hook h, forces it against leaf A therebydepressing said leaves A3 and A2, so that they may be readily pushedunder leaf A. The legs of course were first lifted into a horizontalposition, where they were kept by catch-arm z' engaging catch 7o.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

l. In an extensible table, the combination of a hook or catch o,attached to one leaf, with an articulated hook n, attached to anotherleaf and arranged to catch over the former hook,

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and a spring fr, operating to force the said hook upward into suchengagement, substantially as set forth.

2. In an extensible table, the combination of the cam g, pivoted tov thelowermost leaf thereof atits rear edge, withthe rod f, attached to saidcam, the lhandle f', attached to said rod, and suitable guides for saidrod and handle, the said cam being attached to the said leaf at one edgeand extended under the contiguous part of the next leaf, so that it willlift the latter when operated by pushing in the said handle,substantially as set forth.

In .witness whereof I have hereunto signed my name in the presence oftwo subscribing witnesses.

CARL OBERLNDER.

Witnesses:

JoH. ADLER, ERwIN MULLER.

